Inspect first
Every result has an exact Unicode code point and position. No mystery score.
Free online tool
Claude Watermark Remover
Check what Claude text actually contains. Inspect hidden Unicode, formatting artifacts, and other observable traces before you clean anything.
Claude’s official 2026 watermark is statistical, not a hidden character. Learn how it works.
Paste Claude text
Processed locally in your browserTotal characters0
Inspectable characters0
Results will show exact code points and positions.
Preview: nothing selected
Cleaned text will appear here.
Important distinction
Claude’s watermark is not a hidden character
Anthropic says its text watermark is a statistical pattern in word-selection choices. It does not add zero-width characters, secret strings, or HTML metadata to a Claude response. This checker reports artifacts that actually exist in the text or clipboard layer.
| Signal | Detect? | Remove? |
|---|---|---|
| Hidden Unicode | Yes | Yes |
| Clipboard formatting | Inspect when supplied | Yes |
| Strange whitespace | Yes | Yes |
| File metadata | Depends on file | Depends |
| Claude statistical watermark | No public detector | Not verifiably |
Clean deliberately
Choose individual artifacts or clean the safe inspectable set locally.
Evidence over guesses
We do not call hidden Unicode Claude’s official watermark.
Learn about Claude watermarking
Rewrite mode
A fresh draft, not a false guarantee.
Deep Rewrite substantially changes sentence construction while preserving protected facts, names, dates, links, code, and quotations where possible. It is described as rewritten—not “watermark removed”—because independent verification is unavailable.
Rewrite Claude text